Territory



vDREW J.

invention or experiment.

A'fer tothe annexed drawings,l

JOHN 1 s; BUTLER AND ANDREW J. s 'rUoKR-R, or siLvER CITY IDAHO TERRITORY.

Lem/rs Patat I vq. 92,580, daad .my 13,1869.

.IMPROVEMENT IN REcIPnocATING-BELLOWS.

The-Schedula referred t'o in these Letters Patent To all whom it lrml/y concern Be. it known that we, JOHNS. BUTLER and AN- STU'OKER, of Silver Oity, county of Owyhee, and Territory of Idaho, have invented a Reciprocating- Force Bellows; and we'do herebydeclare the follow- Lingdescription and accompanying drawings are sudcient toenable any person skilled: in the art or science to whichiit most nearly appertains, to make anduse our said invention or improvement, without further v'Our invention relates to an improved apparatus for producing a blast of air, and can be used for any` purpose wherea 'steady and uniform'current of air is desired'to be introduced into a furnace, for the purpose Vdevice is intended more of intensifying the heat. The

foundry-blasts, and for particularly for smiths forges, the ventilation ofmines and It consists of twobellows operated alternately by machinery, .and whiclrselrve Y*as vair-pumps for: supply- .ing the air to 'a reservoiry from which the compressed air is ejected through an orice or nozzle.

To more particularly describe our invention, wereforming a vpart of this specification, of which- Figure 1 is a side elevation vof' the apparatus, with the side of the box removed.

Figure 2 is a plan.' Similar letters of reference in each of -the figures indicate like parts.

.A is van air-chamber, made wide at one end, and having its. sides converging towards the opposite-end, to which is aiixed anozzle, B, similar tothe nozzle employed on a common pair of bellows. The chamber Aj s placed on a box, O, or other suitable frame, and has placed uponA its top the` exible reservoir orbellows D'.

This reservoir can be made circular, as represented, .or of any other suitable form, and is made perfectly air-tight; the top of the chamberA beingcut away beneath it to allow the .air to pass from the chamber iutothe reservoir. Air is supplied tothe chamber and reservoir by two horizontal air-pumps or bellows E E, attached to the wide end of the chamber, one ou each side.

Each of these bellows consists of two solid ends, a a',

united by some light and -flexiblesubstance or' matealF E The ends a.'l of the two bellows' have attached to preferable; but when lshaft should have abalance-wheel, in order to equalize and making part of the vsame.

them-the slides G G,.which move in ways' in vthe sides of the box or frame, and in a partition,

box.'v Y Each' end of the bellows is provided with an opening, and is closed by a tight valve, which permits air to pass in, but prevents its return.

AThe two bellows E E are operated by a spring, P, and a train of gear-wheels, shown at K, which causes the'shaft I to revolve;

This shaft has at each end the cranks L, which are connected with the slides G5 by the pitlnen N, thus giving to forces a ysteady stream of air intothe chamber A and rese'r-voir l).- i l "At d isa' lever, which operates a vthrottle-valve in the nozzle B, for the purpose of shutting oi the blast, and which, when closed, will cause the machine to stop in case'everything is yair-tight.

The bellows E. E may be operated by weights instead of the. spring, and'in most cases they will be `thespring is used, the crankthe motion when passing over the centre'.

j 'By this arrangement we can get up a blast, with a regular and uniform pressure, at mu'ch less expense of powerv than can be accomplished by the ordinary fan-blower, as the power is only applied to the air actu- ,ally'used,.and there is no dead. weight or hack-.action to contend with.

The machine may be operated by any convenient or suitable power.

Having thus describedour invention, What we claim, and desire to secure by Letters Patent, is

l. The combination, with the chamber A,provided with the reservoir D, of the alternately-acting pumps or bellows E E, substantially as and for the purpose described.

2. The arrangement, with Areference to each other,

of the several parts ofthe 'improved blowing-appaiatus above described, substantially as set forth. In witness whereof, we have hereunto s et our hands and seals.

JOHN S. BUTLER.. [1.. s.] ANDREW J. STUGKER. [11. s.] Witnesses:

H. H. KNMI, H. E.' LESLIE.

H, inside the lthe two bellows an Yalternate action, which' 

